Three conditions are necessary for Penance: contrition, which is sorrow for sin, together with a purpose of amendment; confession of sins without any omission; and satisfaction by means of good works.
Good can exist without evil, whereas evil cannot exist without good.
Well-ordered self-love is right and natural.
Whatever is received is received according to the nature of the recipient.
There is nothing on this earth more to be prized than true friendship.
God should not be called an individual substance, since the principal of individuation is matter.